"WHEREAS, The Federal Government has failed to accomplish the purposes of the compact of union between these States, in giving protection either to the persons of our people upon an exposed frontier, or to the property of our citizens, and
WHEREAS, the action of the Northern States of the Union is violative of the compact between the States and the guarantees of the Constitution; and,
WHEREAS, The recent developments in Federal affairs make it evident that the power of the Federal Government is sought to be made a weapon with which to strike down the interests and property of the people of Texas, and her sister slave-holding States, instead of permitting it to be, as was intended, our shield against outrage and aggression"
The actual document is online at http://www.tsl.state.tx.us/treasures/earlystate/secess-doc.html